Byueng-Su Yoo

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A 40 Gb/s bidirectional optical link using four-channel optical subassembly (OSA) modules and two different wavelengths for the up- and down-link is demonstrated. Widely separated wavelengths of 850 nm and 1060 nm are used to reduce the optical crosstalk between the up- and down-link signals. Due to the integration capabilities of silicon, the OSA is(More)
Article history: Received 28 July 2008 Received in revised form 26 September 2008 Available online 2 December 2008 0026-2714/$ see front matter 2008 Elsevier Ltd. A doi:10.1016/j.microrel.2008.10.008 * Corresponding author. Tel.: +82 2 2123 4619; fax E-mail address: iyun@yonsei.ac.kr (I. Yun). In this paper, the long-term reliability of all monolithic(More)
Polarization of vertical-cavity surface-emitting lasers ~VCSELs! grown on ~001! GaAs substrate has been controlled by electro-optic birefringence. Birefringence was induced at the top distributed Bragg reflector by applying an electric field along the @001# direction. The cavity resonance of the polarized light along the @110# or @11̄0# direction shifted to(More)
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